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Minerals
Naturally occurring substance that is solid and stable at room temperature, representable by a chemical formula, usually abiogenic, and has an ordered atomic structure. It is different from a rock, which can be an aggregate of minerals or non-minerals, and does not have a specific chemical composition. The general definition of a mineral encompasses the following criteria: 1 - Naturally occurring 2 - Stable at room temperature 3 - Represented by a chemical formula 4 - Usually abiogenic 5 - Ordered atomic arrangement
Contributors in Minerals
Minerals
boussingaultite
Geology; Minerals
Boussingaultite is a rare sulfate mineral of the chemical formula: (NH 4 ) 2 Mg(SO 4 ) 2 ·6(H 2 O). The formula of boussingaultite is that of Tutton's salts type. It was originally described from ...
kratochvílite
Geology; Minerals
Kratochvilite is a rare organic mineral formed by combustion of coal or pyritic black shale deposits. It is a hydrocarbon with the formula of either C 14 H 10 or (C 6 H 4 ) 2 CH 2 . It is a ...
allanpringite
Geology; Minerals
Allanpringite is a phosphate mineral named after Australian mineralogist Allan Pring, South Australian Museum. Allanpringite is a Fe 3+ analogue Al-phosphate mineral wavellite, but it has a ...
birnessite
Geology; Minerals
Birnessite (Na 0.3 Ca 0.1 K 0.1 )(Mn 4+ ,Mn 3+ ) 2 O 4 · 1.5 H 2 O is an oxide mineral of manganese along with calcium, potassium and sodium. It has a dark brown to black color with a submetallic ...
safflorite
Geology; Minerals
Safflorite is a rare cobalt iron arsenide mineral with formula: (Co,Fe)As 2 . Pure safflorite would be just CoAs 2 , but iron is virtually always present. Safflorite is a member of the three-way ...
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